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两款超php教程分页类代码
/**
* description:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。
* 2.0增加功能:支持自定义风格,自定义样式,同时支持php4和php5,
* example:
* 模式四种分页模式:
* require_once("../libs/classes/page.class.php");
* $page=new page(array("total"=>1000,"perpage"=>20));
* echo "mode:1
".$page->show();
* echo "
mode:2
".$page->show(2);
* echo "
mode:3
".$page->show(3);
* echo "
mode:4
".$page->show(4);
* 开启ajax:
* $ajaxpage=new page(array("total"=>1000,"perpage"=>20,"ajax"=>"ajax_page","page_name"=>"test"));
* echo "mode:1
".$ajaxpage->show();
*/
class page
{
/**
* config ,public
*/
var $page_name="page";//page标签,用来控制url页。比如说xxx.php?page=2中的page
var $next_page=">";//下一页
var $pre_page="<";//上一页
var $first_page="first";//首页
var $last_page="last";//尾页
var $pre_bar="<<";//上一分页条
var $next_bar=">>";//下一分页条
var $format_left="[";
var $format_right="]";
var $is_ajax=false;//是否支持ajax分页模式
/**
* private
*
*/
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
var $ajax_action_name="";//ajax动作名
var $nowindex=1;//当前页
var $url="";//url地址头
var $offset=0;
/**
* constructor构造函数
*
* @param array $array["total"],$array["perpage"],$array["nowindex"],$array["url"],$array["ajax"]
*/
function page($array)
{
if(is_array($array)){
if(!array_key_exists("total",$array))$this->error(__function__,"need a param of total");
$total=intval($array["total"]);
$perpage=(array_key_exists("perpage",$array))?intval($array["perpage"]):10;
$nowindex=(array_key_exists("nowindex",$array))?intval($array["nowindex"]):"";
$url=(array_key_exists("url",$array))?$array["url"]:"";
}else{
$total=$array;
$perpage=10;
$nowindex="";
$url="";
}
if((!is_int($total))||($total<0))$this->error(__function__,$total." is not a positive integer!");
if((!is_int($perpage))||($perpage<=0))$this->error(__function__,$perpage." is not a positive integer!");
if(!empty($array["page_name"]))$this->set("page_name",$array["page_name"]);//设置pagename
$this->_set_nowindex($nowindex);//设置当前页
$this->_set_url($url);//设置链接地址
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$this->perpage;
if(!empty($array["ajax"]))$this->open_ajax($array["ajax"]);//打开ajax模式
}
/**
* 设定类中指定变量名的值,如果改变量不属于这个类,将throw一个exception
*
* @param string $var
* @param string $value
*/
function set($var,$value)
{
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else {
$this->error(__function__,$var." does not belong to pb_page!");
}
}
/**
* 打开倒ajax模式
*
* @param string $action 默认ajax触发的动作。
*/
function open_ajax($action)
{
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
* 获取显示"下一页"的代码
*
* @param string $style
* @return string
*/
function next_page($style="")
{
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
}
return "".$this->next_page."";
}
/**
* 获取显示“上一页”的代码
*
* @param string $style
* @return string
*/
function pre_page($style="")
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
}
return "".$this->pre_page."";
}/**
* 获取显示“首页”的代码
*
* @return string
*/
function first_page($style="")
{
if($this->nowindex==1){
return "".$this->first_page."";
}
return $this->_get_link($this->_get_url(1),$this->first_page,$style);
}/**
* 获取显示“尾页”的代码
*
* @return string
*/
function last_page($style="")
{
if($this->nowindex==$this->totalpage){
return "".$this->last_page."";
}
return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
}
function nowbar($style="",$nowindex_style="")
{
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
$begin=$this->nowindex-$plus+1;
$begin=($begin>=1)?$begin:1;
$return="";
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$return.=$this->_get_text($this->_get_link($this->_get_url($i),$i,$style));
else
$return.=$this->_get_text("".$i."");
}else{
break;
}
$return.="n";
}
unset($begin);
return $return;
}
/**
* 获取显示跳转按钮的代码
*
* @return string
*/
function select()
{
$return="";
return $return;
}
/**
* 获取mysql教程 语句中limit需要的值
*
* @return string
*/
function offset()
{
return $this->offset;
}
/**
* 控制分页显示风格(你可以增加相应的风格)
*
* @param int $mode
* @return string
*/
function show($mode=1)
{
switch ($mode)
{
case "1":
$this->next_page="下一页";
$this->pre_page="上一页";
return $this->pre_page().$this->nowbar().$this->next_page()."第".$this->select()."页";
break;
case "2":
$this->next_page="下一页";
$this->pre_page="上一页";
$this->first_page="首页";
$this->last_page="尾页";
return $this->first_page().$this->pre_page()."[第".$this->nowindex."页]".$this->next_page().$this->last_page()."第".$this->select()."页";
break;
case "3":
$this->next_page="下一页";
$this->pre_page="上一页";
$this->first_page="首页";
$this->last_page="尾页";
return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
break;
case "4":
$this->next_page="下一页";
$this->pre_page="上一页";
return $this->pre_page().$this->nowbar().$this->next_page();
break;
case "5":
return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
}
}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
* 设置url头地址
* @param: string $url
* @return boolean
*/
function _set_url($url="")
{
if(!empty($url)){
//手动设置
$this->url=$url.((stristr($url,"?"))?"&":"?").$this->page_name."=";
}else{
//自动获取
if(empty($_server["query_string"])){
//不存在query_string时
$this->url=$_server["request_uri"]."?".$this->page_name."=";
}else{
//
if(stristr($_server["query_string"],$this->page_name."=")){
//地址存在页面参数
$this->url=str_replace($this->page_name."=".$this->nowindex,"",$_server["request_uri"]);
$last=$this->url[strlen($this->url)-1];
if($last=="?"||$last=="&"){
$this->url.=$this->page_name."=";
}else{
$this->url.="&".$this->page_name."=";
}
}else{
//
$this->url=$_server["request_uri"]."&".$this->page_name."=";
}//end if
}//end if
}//end if
}
/**
* 设置当前页面
*
*/
function _set_nowindex($nowindex)
{
if(empty($nowindex)){
//系统获取
if(isset($_get[$this->page_name])){
$this->nowindex=intval($_get[$this->page_name]);
}
}else{
//手动设置
$this->nowindex=intval($nowindex);
}
}
/**
* 为指定的页面返回地址值
*
* @param int $pageno
* @return string $url
*/
function _get_url($pageno=1)
{
return $this->url.$pageno;
}
/**
* 获取分页显示文字,比如说默认情况下_get_text("1")将返回[1]
*
* @param string $str
* @return string $url
*/
function _get_text($str)
{
return $this->format_left.$str.$this->format_right;
}
/**
* 获取链接地址
*/
function _get_link($url,$text,$style=""){
$style=(empty($style))?"":"class="".$style.""";
if($this->is_ajax){
//如果是使用ajax模式
return "网页特效:".$this->ajax_action_name."("".$url."")">".$text."";
}else{
return "".$text."";
}
}
/**
* 出错处理方式
*/
function error($function,$errormsg)
{
die("error in file ".__file__." ,function ".$function."() :".$errormsg);
}
}
?>
代码二
/**
* 获取页码导航html
* @param $pagenum:当前页码
* @param $pagesize:每页数量
* @param $rowcount:记录总数
* @param $navurl:链接页面url
*/
function getnavhtml($pagenum,$pagesize,$rowcount,$navurl){
$pagecount = (int)($rowcount/$pagesize); //总页数
if ($rowcount % $pagesize >0){
$pagecount++;
}
if ($pagenum>$pagecount){
$pagenum = 1;
}
$firstnav = "首页 ";
$lastnav = "尾页 ";
$prevnav="";
$nextnav="";
if ($pagenum>1){
$navpagenum = $pagenum-1;
$prevnav = "上一页 ";
}
if ($pagenum<$pagecount && $pagecount>1){
$navpagenum = $pagenum+1;
$nextnav = "下一页 ";
}
$amongnav="";//关键循环
for ($i=1;$i<=5;$i++){
$navpagenum = $pagenum+ $i-3;
if ($navpagenum>0 && $navpagenum<=$pagecount){
$navcss教程 = $navpagenum == $pagenum?" class="hover"":"";
$amongnav.="{$navpagenum} ";
}
}
return $firstnav.$prevnav.$amongnav.$nextnav.$lastnav." ".$pagenum."/".$pagecount." 共有[".$rowcount."]条数据";
}
}